Automated Resin Handling for Plastic Stationery Manufacturing
Project Background
This project was developed for a plastic stationery manufacturer operating 80 injection machines.
With a large number of machines running simultaneously, the factory needed a reliable way to manage raw plastic supply, reduce manual handling, and maintain consistent product quality.
The customer required a complete solution covering storage, drying, mixing, transportation, and automatic feeding.
Customer Challenges
High Labor Requirements
Previously, operators needed to manually transport bags of resin to different machines.
For a factory with 80 injection machines, this created:
- High labor costs
- Inefficient material distribution
- Difficult daily management
Unstable Raw Material Preparation
Before processing, plastic pellets need proper drying and mixing.
Without centralized preparation, problems may occur:
- Inconsistent moisture levels
- Uneven mixing results
- Higher rejection rates
Complex Factory Management
When many machines operate at the same time, ensuring each machine receives the correct raw material supply becomes a challenge.
The factory needed a more automated and organized approach.
Customized Conveying Solution
Based on the factory layout, we designed a complete automated resin handling solution.
1. Outdoor Storage Silos
Large storage tanks were installed outside the factory.
This design provides:
- Larger storage capacity
- Better space utilization
- Easier raw material management
2. Dedicated Preparation Room
A separate room was designed for:
- Dehumidifying dryers
- Plastic crushers
- Mixing equipment
The preparation process ensures that recycled and virgin pellets are properly treated before being delivered to the machines.
3. Central Vacuum Transportation Network
After preparation, pellets are transferred through a pipeline network powered by Roots blowers.
The automatic conveying process delivers materials directly to each injection machine.
Advantages:
- Continuous supply
- Less manual operation
- Cleaner working environment
4. Automatic Color Dosing Control
Each machine is equipped with:
- Color feeder
- Weighing controller
The equipment accurately controls the ratio between resin and masterbatch.
This helps achieve:
- Stable color consistency
- Reduced waste
- Lower defect rate
Benefits for the Factory
Improved Efficiency
The automated feeding process eliminates frequent manual transportation and provides a stable supply for all machines.
Better Quality Control
Accurate drying, mixing, and dosing improve product consistency and reduce quality fluctuations.
Lower Operating Costs
The solution reduces labor requirements and minimizes unnecessary material consumption.
Easier Factory Expansion
The pipeline layout allows additional machines to be connected when the business grows.
Conclusion
For large injection molding factories, efficient resin management plays an important role in maintaining stable operation.
This customized conveying solution integrates storage, preparation, transportation, and dosing into one workflow, helping the customer achieve higher efficiency and better quality control.
The design is based on advanced central feeding system technology and can be customized according to different factory layouts.
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